Air treatment system



FIG. 1 is a perspective view of the air treatment system embodying thenew design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right sideelevational view being identical thereto;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

FIGS. 1, 2, and 5 show portions of the front side in broken lines. Theportions shown in broken lines are shown for environmental purposes anddo not form any part of the claimed design.

The ornamental design for air treatment system, as shown.